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(NO Model.)

- 3 Sheets-Sheet I. M. A. T. BOEHNCKE & I-I. ROHWER.

CONTINUOUS BRICK KILNJ No. 392,984. Patented Nov. 20, 1888.

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WITNESSES ZZZa/dn JJ Z ew ZZ N. PETERS. Fhvloulbugnpiwr, Wishingian. D C.

(No Model.) 3 Sheets-Sheet 2.-

M. A. T. BOEHNO KE & H. RO'HWER.

CONTINUOUS BRICK KILN.

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WITNESSES yew mi cm F 1 Attorney N. PETERS. Pmwumm her, Wuhhigtun. DI;

MAX A. TH. BOEHNGKE AND HENRY ROHWER, OF OMAHA, NEBRASKA,

ASSIGNORS TO THE CONTINUOUS KILN COMPANY, OF SAME ILAOE.

CONTINUOUS BRICK-KILN.

SPECIFICATION forming part of Letters Patent No. 392,984, dated November 20, 1888.

Application filed July 11, 1887. Serial No. 244.002. (No model.)

To all whom it may concern.-

Be it known that we, MAX A. TH. BOEHNOKE and HENRY ROHWER, citizens of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented certain new and useful Improvements in 0ontinuous Brick-Kilns; and we do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to continuous brickkilns, and its object is to provide a simple and improved kiln of this character,i11 which each smoke-chamber can be closed and disconnect ed from the chimney or stack to enable repairing of the chamber without stopping or interfering with the working and operation of the other chambers of the kiln, in which the smoke-chamber fiue can be closed and opened independent of the kiln-compartment fines, whereby the fiues of each kiln-compartment may be regulated independent of the influence of wind and weather upon the stack, in which one stack will serve for from one to four separate kilns, the kilns being independently connected with the stack and operating without influence or interference with the others, whereby the cost of erection is diminished, and which will furthermore possess advantages in point of inexpensiveness, durability, and general efficiency.

To this end our invention consists in certain improvements over our improved continuous kiln patented August 4, 1885, No. 323,492, and in the improved construction, arrangement, and combination of parts, substantially as hereinafter set forth, and particularly pointed out in the claims.

In the drawings, Figure l is a vertical sectional view illustrating the stack,smoke-chamher, and adjoining parts of a kiln embodying our improvements. Fig. 2 is a horizontal cross-section of the same, taken through the stack, smokechamber flues, and adjoining parts of the kiln. Fig. 3 is a horizontal section taken through the stack and illustrating a construction in which a single stack located outside the kiln is adapted to independently serve for four kilns. Fig. 4 is a detail sectional view of one of the smoke-chamber fluedampers and flue-pipes. Fig. 5 is a top or plan view of the same. Fig. 6 is a detail view illustrating one of the dampers. Fig. 7 is a corresponding detail view illustrating one of the fine-pipes. Fig. Sis a vertical central sectional view illustrating part of a modified form of kiln, in which the stack is located in the center of the kiln. Fig. 9 is a horizontal sectional view on the line w m, Fig. 8.

Corresponding parts in the figures are denoted by the same letters of reference.

Referring to the drawings, A designates the stack, the walls of which are enlarged at their lower ends, a. The lower portionof the stack is divided into two or more separate compart ments, B, by means of vertical partitions b, disposed transversely and extending entirely across the interior diameter of the stack. The said partitions rise from the base portion a and project upwardly to about the height of the enlarged portion of the walls of the stack, thus forming a general flue or chimney, 0, above the separate compartments or chambers B.

In Figs. 1 and 2 a single stack is illustrated in connection with two kilns, and in this construction the smoke-chamber fines of the respective kilns enter the stack on diametrically-opposite sides and open into their respective compartments B. Just outside the stack these smoke-chamber flues D diverge and form two separate smoke-chamber flues, E E, entering their respective smoke-chambers F.

The kiln may be of any adapted or suitable construction and arrangement; but is preferably constructed and arranged, as herein shown, with thesmoke-chamber fiues E Erunning horizontally under the kiln-compartment G and having their ends turned upwardly, as shown at e,'and entering the smoke-chambers F, the smokechambers being divided by a wall or partition, f. Between the various walls of the kiln is provided a suitable filling of sand or other material, and like filling is provided around the end e of the dues E at the bottom of the smoke-chambers, as shown at In the end of the vertical portion 6 of the smoke-chamber fines is set a corresponding cylindrical flue-pipe, H, which projects above the filling f 2 and is adapted to receive a damper, I, formed by a disk or platehaving the downwardly-projecting annular flange 'i, adapted to set over the edge of pipe H, as illustrated in Fig. 5. These dampers are controlled and operated by means of vertical rods J, projecting through openings j in the top of smokechambers F. The flue-pipe His preferably provided with an annular flange, 71, adapted to rest upon the top edge of fiue c.

The smoke-chamber flue-pipe H is formed of cast-iron, and it will be noted that by thus providing a flue-pipe and damper for each smokechamber flue a separate down-draft smoke-chamber flue is formed for each part of the smoke-chamber.

The smoke-chamber of the kiln is divided by the wall or partition f into two parts, (as shown,and designated chambersF F,) and each part of the smoke-chamber is provided with a separate downdraft smoke-chamber flue, the two fines E E of each and every kiln being merged outside the kiln into the single flue D, which latter enters one of the separate compartments B of the stack. The draft of the two smoke-chambers F F of each kiln is thus conducted into one of the compartments of the stack, and by the general construction and arrangement just described we are enabled to have each smoke-chamber which is not in use closed and disconnected from the chimney, so that the smoke-chamber thus closed may be repaired without stopping the working of the other smoke-chamber or the operation of the kiln.

It will of course be understood that suitable openings or passages are provided in the outer walls of the kiln and enter the compartments G, and that'suitable fines are provided to connect each kiln-compartment G- with one of the smoke chambers, such an arrangement 5 of openings and ilues being illustrated in our above-mentioned patent. We are therefore enabled to regulate the flues of each kiln-compartment independentof theintluenee of wind and weather upon the stack and draft, as the smoke-chamber flue leading from the smokechamber to the stack can be closed and opened by operation of the dampers I independent of any adjustment or operation of the kiln-compartment fines.

In our patent of August 4, 1885, above mentioned, the kiln-compartment flues open into a general smoke-chamber, in the center of which was located the chimney or stack, and this general smoke-compartment had a direct opening into the said chimney. In this construction when it became necessary to repair or close the smoke-chamber for any purpose the connection of every compartment of the kiln with the general smoke-chamber had to 65 be closed, thus completely stopping the working of the kiln In the event that the genessary changes consist in dividing the smokeehamber into the two compartments F F, each having a separate downdraft smoke-chamber line, the two flucs entering one of the compartments of the stack, from which it is apparent that one of said smoke-chambers F may be closed and repaired without stopping the working of the other smoke-chamber or interfering with the operation of the compartments of the kiln.

In Fig. 3 we have illustrated a construction in which a single stack is adapted to independently serve for four kilns, this being effected by dividing the lower portion. of the stack into four compartments B, and into each one of the separate compartments enters the flue D, connecting the two smokechamber flues E E of the smoke-chambers .F F of each separate kiln. Thus one stack may be used for a number of kilns at the same time, and the cost of erection is correspondingly diminished.

\Vhcre it is desired to employ one stack in connection with a single kiln, the dues E E may enter a stack of ordinary construction, and the same operation will be secured as in the case where the said flues enter one of the compartments of a stack of our improved construc tion.

In the modification illustrated in Figs. 8 and 9 we have shown a construction in which the stack is built in the center of a kiln and divides the smoke-chamber into two chambers, F F, the stack being divided by the partition b into the two compartments B B, and a separate smoke-chamber flue, E, extends from each smoke-chamber F into one of the compartments B of the stack. In this construction the same operation is effected as in the case where the stack is located as outside the kiln and the two flues of the separate smokecompartments F F enter the same compartment B of the stack.

The operation and advantages of our invention will be readily understood by those skilled in the art to which it appertains, and it is manifest that numerous modifications may be made in the details of construction as herein illustrated without departing from the spirit and scope of our invention. WVe therefore do not limit ourselves to the exact construction and arrangement of parts herein shown and specified.

We claim as our invention- The herein-described improvement in brickkilns, comprising the series of kilns, the two- IIO part smoke-chamber located on one side of In testimony whereof we affix our signatures said kilns, the smoke-stack disposed outside in presence of two witnesses.

of and beyond said kilns, the two separate downdraft-fines connected to said smoke- 5 chamber and passed horizontally in under the l kilns, and the single flue connecting said sepa- I rate downdraft-fines with said smoke-stack, substantially as shown and described. l

\Vitnesses:

C. F. GOODMAN, B. J. SOANNELL. 

